Connection to Server Lost | HP Networking TopTool Products manual

Monitoring Network Traffic

Troubleshooting Traffic Monitor

■Too Little Traffic on Network—If your network is carrying very little traffic at this time, the gauges will not indicate any traffic.

■One Segment is Gray—There may be a problem with this particular segment. The data sampler may not be working, there may not be enough traffic on that segment, or a device may have been disconnected from that segment.

■Machine is Very Busy—The CPU may not be able to process the data because it is too busy.

Connection to Server Lost

If you see a message in the Traffic Monitor page stating that the connection to the server is lost, you can try the following:

■

■

Check the server to see if it is still running.

Verify that the Data Collector is running. Go to the HP TopTools home page and select Settings - TopTools Services.

■Click on the browser Refresh button, or use Ctrl-Refreshto have the browser reload the applet.

■Close the browser and reopen it.

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HP Networking TopTool Products manual Connection to Server Lost

Contents

HP TopTools for Hubs & Switches User Guide Page User Guide HP TopTools for Hubs & Switches Applicable Product Contents Listing Devices Configuring Polling Hardware and Software RequirementsDevice Topology Node Port Table Locating a Node Custom Groups Searching for Devices Top Conversations Inventory of End Nodes Monitoring Network Traffic Overview Basic Operation Quality of Service Viii Managing Switches Performing Diagnostics Appendix a How to Update the Map Files Quick Start Starting HP TopTools for Hubs Switches Quick Start Getting Around in HP TopTools Viewing Your Network Devices DevicesMaps Quality of Service Using the PannerPolicies Examining Alerts Configuration Policies List of Networking Devices Configuring and Monitoring Devices T e Traffic Monitor Viewing Network Traffic Optimizing Your Network Network MeterTop Talkers How to Get Support Introduction Introduction to HP TopToolsTopics covered in this chapter include Introduction HP TopTools for Hubs & Switches Ware running and know how to use your network utilities HP TopTools for Hubs & Switches Home Viewing a List of Devices Network Devices Features Network Growth Network TrafficHP Devices Supported Group Policies Snmp J2611A HP Switches Supported Learning to Use HP TopTools HP TopTools Technical Product Support HP Procurve Switches & Hubs Technical Support Introduction Hardware and Software Requirements System RequirementsSystem Requirements Requirements System Requirements Beginning Discovery Discovering Your Devices Discovery Status Selecting NetworksDiscovering Your Devices Adding Devices for Discovery Networks Page of Settings for Discovery Settings Page of Settings Discovery Configuring Discovery Settings Additional Community Names Troubleshooting Discovery Inventory of Devices Interpreting the Alert Log Automatic Fault Finding AlertsThis chapter contains information on Alerts Alerts Fault Description, Cause and Actions Common Faults Check for faulty cabling, transceivers, and NICs Launching the Device View Acknowledging AlertsClosing Alerts Filtering Alerts First Time Installation InformationSorting Alerts Selecting Alert Log Filters Filtering by Alert State Selecting Alert Log Filters TopologyFiltering by Alert Severity Filtering by Device Selecting Alert Log Filters Custom Groups Selecting Alert Log Filters SearchClick on the + or boxes to add or remove search criteria Search Configuring Action on Alerts Configure Actions on Alerts Deleting Closed Alerts Alerts Listing Devices Networking Devices Communication from the list Configuring Polling Device Communication Settings Selecting Actions for Devices SNMP/Trap Configuration Thresholds Dialog Box Device Topology Topology of Networking Devices Write in order for your devices to be mapped When a link has been clicked on, it is no longer blue Node Port TableCustom Groups Custom Groups Searching for Devices Search Networking Devices Creating Groups Group Policies Viewing the Devices in a Group Members of a groupGroup Policies Modifying a Group Adding a Group Adding a Device to a Group Group Configuration Modify Group Changing the Group Name Removing a Device from a Group Main Configuration Policies Configuring Group Policies Snmp System Information General Configuration Policies Checking Firmware Versions Alert Configuration Policies Setting Fault Sensitivity Sending Alerts to the HP TopTools Management StationRemoving Trap Receivers Advanced Switch Features Automatic Broadcast Control ABC Advanced Switch Features Enabling Broadcast Control for IPX Enabling Broadcast Control for IP Internet Group Management Protocol Igmp Automatic IP Gateway Configuration Spanning Tree Protocol Security Configuration PoliciesCommunities Forward with High Priority Security Policies Adding a Community Modifying a Community Configuring Authorized ManagersDeleting a Community Adding or Deleting an Authorized Manager Displaying Maps Viewing Your Maps Viewing Your Maps Map Server Settings Automatic Map Generation Default View Map Styles Cluster Size Spacing Launching a Map Launching the Device View Using the Panner Options for Displaying Maps SNMP/Trap ConfigurationOptions Refresh Maps Options-Labeling Locating a Node Changing Map ViewsOptions-Legend Monitor Viewing Your Maps Monitoring Network Traffic Using Traffic Monitor Monitoring Network Traffic Traffic Monitor Main Reading the Segment Histogram Reading the Traffic Information Gauges Setting Thresholds Selecting Segment Groups and SegmentsComparing Segments Across Different Medias Thresholds Window Displaying the Network Meter Options Button Who Are the Top 5 Talkers? Top 5 Talkers Other Top Talkers Not in Selected Minute Top5 View Menu Items OthersLocating a Segment or End Node Data sampler for this segment Traffic Data Collector Settings Automatic Monitoring Manual MonitoringDiscovery/Topology Data Automatic is checked Adding Ports for Manual Monitoring Configuring Ports for Manual MonitoringRemoving Selected Devices Remove All Devices Traffic Data Storage Traffic Data Collector Storage Settings Traffic Data Collector Performance Traffic Data Collector Performance Troubleshooting Traffic Monitor Connection to Server Lost Monitoring Network Traffic Planning for Network Growth Meeting the ChallengesThis chapter includes the following topics Using Network Tools Planning with the Network Performance AdvisorPlanning for Network Growth 10-3 Starting the Network Performance Advisor Welcome Page for Network Performance Advisor Creating a New Report Report Generation Page of Network Performance Advisor Modifying Your Settings Worsen network performance during periods of normal use To cancel a report, click on the Cancel analysis buttonYou can only create one report at a time 10-6 Report Properties Section Viewing a Report With Data Available Summary of Recommendations Section 10-9 Reorganize Your Current Equipment Recommendation Details Section 10-11 Add or Upgrade Equipment How the Data is AnalyzedDividing Segments into Workgroups Traffic pattern before dividing into workgroups 10-14 Traffic Pattern after Dividing into Workgroups Top Conversations Converting Segments to Desktop SwitchingUpgrading Segments to Faster Speed Media Dedicating Bandwidth to Top Talkers Top Conversations 10-17 Inventory of End Nodes Administration When There Are No RecommendationsControlling Data Storage May not be valid How the Network Performance Advisor Collects DataUnderstanding HP Sampling 10-20 Potential Problems with Data Collection Segments Excluded from Analysis Segments that do not have Devices with Sampling CapabilitySegments not Selected for Analysis Overview Quality of Service HP Procurve Routing Switch 9308M and 9304M HP Procurve Switch 8000MHP Procurve Routing Switch 6308M-SX and 6208M-SX Switch using the switchs web browser or console interface Basic Operation HP TopTools QoS operates on two levels as described below11-3 Configuring QoS for Specific Devices IP Addresses Viewing All Currently Configured QoS Policies Adding a Policy for an IP Address Adding a Policy for a Specific IP Address Configuring a QoS Policy for IP Type Service ToS ToS Configuration Options11-6 Switch Ports Differentiated Services11-7 Outbound ToS Option Procurve Vlan How To Configure a ToS Policy DECNet AppleTalk Configuring a QoS Policy for Specific Protocols QoS Policy for a Specific Protocol Click on the Return button to return to the Main QoS Configuring a QoS Policy for a Specific 11-12 Device Management Features Accessing Hub Features Accessing Hub Features Viewing Device Identity Information12-2 Reading the Performance Gauges Interpreting Device Status Performance Gauges for a Hub Global Counters Switching Hub Global CountersHub Global Counters Gauge Attributes Global Counters Counters are described in the following table12-6 Counter Description Configuring Your Device Port CountersSee the online help for information on each counter Hub Device View Fault Detection System Information Configuring IP Hub IP Configuration Switching Hub IP Configuration12-10 Setting Description Port ConfigurationInformation is described in the following table Port Information Backup Links Bridge Enable/Disable Configuring Load Balancing-Switching Hubs Backup Link ParametersParameter Description Select Technical Support Support URL 12-15 12.The Support 12-16 Displaying Switch Status Managing SwitchesStatus Overview This chapter has information on Graph Area Managing Switches Alert Log Area Port Status Port Status settings are described in the following table Port Status Settings13-4 Identity Page for HP Switch 800T Switch Identity Information Device View Configuring Switch Features Device View for the HP Procurve Switch 2424M Characteristics of Bootp and Dhcp IP Configuration 13-9 Help for that device Class of Service Port Settings13-10 Is, CoS enables you to Using VLANs to Maximize the CoS BenefitWhen it is received on the switch 13-11 Definitions Basic Operation13-12 Default Vlan as a tagged Vlan QoS Setting Outbound Port Queue OperationCoS Priority Criteria for Prioritizing Outbound Packets Switch QueuesPriority Mapping Table Tagged Vlan TopTools Steps for Configuring CoS Priority Guidelines for Configuring CoS PrioritiesPriority Criteria and Precedence 13-16 Assigning a Monitoring Port Monitoring Selected Ports on a Switch Setting Device Features HP Procurve Stack Management 11.Configuration Page for HP 8000M as Commander of a Stack Vlan Configuration Stack Management with VLANsBenefits of Stack Management Adding a Vlan Enabling VLANsRenaming a Vlan Removing a Vlan Modifying Port Vlan Configuration Enabling Gvrp SecurityConfirm removal of the Vlan Support/Management URLs Support URL13-23 13-24 Management Server URL Device Passwords Setting Up Security for a Device Setting Up Security for a Device Manager/Operator Password Combinations Password Settings Passwords Read Write Results ProtectedFunction of Community Names Set Snmp Community Names Select the Additional Devices tab Configuring for Community NamesRun Discovery again This improves the Discovery process Hub Port Security Address Selection Send Alarm Authorized AddressEavesdrop Prevention Setting Security Policy for Selected Ports Disable Port14-9 Hub Intrusion Log Setting the Security Policy for Selected Ports Basic Operation Switch Port Security Port Security Control Parameters Configuring Port Security-Planning 14-13 Learn Mode 14-14 Configuring Authorized IP Managers Overview of IP Mask Operation Access LevelsDefining Authorized Management Stations 14-15 Enter an Authorized Manager IP address Configuring Port Security Port Security Overview Switch Intrusion Log Select Yes to Prevent EavesdroppingClick on the Apply Changes button 10.Security Violation Entries in the Alert Log Operating Notes for Port Security Keeping the Intrusion Log Current by Resetting FlagsIdentifying the IP Address of an Intruder How the Intrusion Log Operates Security Violations Proxy Web Servers 14-22 Performing a Ping/Link Test Performing Diagnostics Performing Diagnostics Rebooting a Device Device Reboot Resetting a Hub to Factory Default Settings 15-4 Resetting a Switch 15-5 Producing a Configuration Report 15-6 Software Update Utility HP Procurve Switches HP Procurve Hubs Other HP SwitchesDownloading Software Starting the Software Update Utility Actions button and select Update FirmwareDownloading Software 16-3 Obtaining the Software from the Web Accepting the Licensing Agreement Software updates are downloaded to 16-5 Scheduling the Software Update Downloading Software Alert Log Showing Successful Software Update HP Download Manager Obtaining New Software from HPDevice types Download Control Make sure you leave the CD in the drive Time, and click OK How to Update the Map Files New software version data16-11 16-12 Agent Firmware Versions Appendix aVerifying Device Agent Versions Appendix a contains the following topics Device Network Addresses Preparing Network DevicesIPX Networks IP Networks Globally Assigned IP Network Addresses Configuring IP Parameters T e Network Bootp Server Appendix a Index-1 Index Index-2 Full Network button … Index-3 Index-4 Index-5 Index-6 Index-7 Index-8 Undo Last Load Balancing … 12-13 Update Discovery …